The invention discloses a roller way stop roller device of a glass production line and a control method thereof. The device is matched with a stacker of the glass production line for use, and is characterized by comprising a roller way, a roller and a stop roller device; the stop roller device comprises a photoelectric switch and a stop roller; the photoelectric switch is arranged in front of thestacker; the stop roller is arranged in front of the photoelectric switch; and the stop roller and the photoelectric switch are on the same section of the roller way. Through the device, glass is tidily stopped by the stop roller when reaching a previous stop roller area of a stacking area, and then, reaches the stacking area; and the stacker measures the width and photo-electrically scans the position of the glass for grabbing, so that the glass is normally placed on boxes, tidily packed and conveniently transported.